Red Hat Enterprise Virtualization 2.2 exec.c subpage_register access control

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.8$0-$5k0.00

A vulnerability was found in Red Hat Enterprise Virtualization 2.2 (Virtualization Software) and classified as critical. Affected by this issue is the function subpage_register of the file exec.c. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The subpage MMIO initialization functionality in the subpage_register function in exec.c in QEMU-KVM, as used in the Hypervisor (aka rhev-hypervisor) in Red Hat Enterprise Virtualization (RHEV) 2.2 and KVM 83, does not properly select the index for access to the callback array, which allows guest OS users to cause a denial of service (guest OS crash) or possibly gain privileges via unspecified vectors.

The weakness was shared 08/24/2010 (Website). The advisory is shared for download at rhn.redhat.com. This vulnerability is handled as CVE-2010-2784. The attack needs to be approached locally. A simple authentication is needed for exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/23/2021). The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability scanner Nessus provides a plugin with the ID 48910 (CentOS 5 : kvm (CESA-2010:0627)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 155627 (Oracle Enterprise Linux Update for KVM (ELSA-2010-0627)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (48910). The entries 54463 and 54462 are related to this item.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.8

VulDB Base Score: 7.8
VulDB Temp Score: 7.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
ATT&CK: T1068

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Dayunlockunlockunlockunlock
Todayunlockunlockunlockunlock

Nessus ID: 48910
Nessus Name: CentOS 5 : kvm (CESA-2010:0627)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

07/22/2010 🔍
08/20/2010 +29 days 🔍
08/24/2010 +4 days 🔍
08/24/2010 +0 days 🔍
08/24/2010 +0 days 🔍
09/06/2010 +13 days 🔍
03/19/2015 +1655 days 🔍
09/23/2021 +2380 days 🔍

Sourcesinfo

Vendor: redhat.com

Advisory: RHSA-2010:0627
Status: Not defined
Confirmation: 🔍

CVE: CVE-2010-2784 (🔍)
OVAL: 🔍

Vulnerability Center: 27006 - Red Hat Enterprise Virtualization 2.2 and KVM 83 Allows Dos or Privileges Escalation, Medium
SecurityFocus: 42579 - QEMU KVM 'exec.c:subpage_register()' Memory Corruption Vulnerability

See also: 🔍

Entryinfo

Created: 03/19/2015 14:37
Updated: 09/23/2021 18:18
Changes: 03/19/2015 14:37 (56), 03/03/2017 15:56 (9), 09/23/2021 18:10 (5), 09/23/2021 18:18 (2)
Complete: 🔍

Discussion

No comments yet. Languages: en.

Please log in to comment.

Do you need the next level of professionalism?

Upgrade your account now!